Insurance carriers in the ACA marketplace offer multiple plans — such as bronze, silver and gold — which offer different levels of coverage at different prices. And a company may offer more than one of each level. For example, Cigna sells three bronze plans, four silver plans and one gold plan in Greater Nashville, according to the state’s rating plan.

That's important because it also debunks the myth that Obamacare mandates "one size fits all" policies.